Počet záznamů: 1
Diel vertical migrations of age 0+ percids in a shallow, well-mixed reservoir
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SYSNO ASEP 0349550 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Diel vertical migrations of age 0+ percids in a shallow, well-mixed reservoir Tvůrce(i) Kratochvíl, M. (CZ)
Čech, Martin (BC-A) RID, ORCID
Vašek, Mojmír (BC-A) RID, ORCID
Kubečka, Jan (BC-A) RID, ORCID
Hejzlar, Josef (BC-A) RID, ORCID
Matěna, Josef (BC-A) RID
Peterka, Jiří (BC-A) RID, ORCID
Macháček, Jiří (BC-A) RID
Seďa, Jaromír (BC-A) RIDZdroj.dok. Journal of Limnology. - : PagePress - ISSN 1129-5767
Roč. 69, č. 2 (2010), s. 305-310Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. IT - Itálie Klíč. slova Perca fluviatilis ; Sander lucioperca ; DVM ; juvenile Vědní obor RIV EH - Ekologie - společenstva CEP GA206/06/1371 GA ČR - Grantová agentura ČR GP206/09/P266 GA ČR - Grantová agentura ČR 1QS600170504 GA AV ČR - Akademie věd CEZ AV0Z60170517 - HBU-Z, BC-A (2005-2011) UT WOS 000282859700012 DOI 10.4081/jlimnol.2010.305 Anotace The distribution of age 0+ perch, Perca fluviatilis and pikeperch, Sander lucioperca was investigated in a shallow reservoir during a 24-h period in late May, using acoustic and netting methods. Diel vertical migrations (DVMs) were acoustically recorded between the layers close to the bottom and the whole water column. The netting data showed a high abundance of larvae and juveniles at night, whereas negligible numbers of age 0+ percids were present in the water column during the day. A strong difference between day and night abundances along with a clear pattern discerned by acoustic methods revealed the DVM of age 0+ percids. Analyses of the fish digestive tract contents indicate that DVM was not governed by feeding behaviour, but rather a defensive strategy against predation. This is in agreement with the size distribution of age 0+ percids, since they were smaller in water column during the day as opposed to the night. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2011
Počet záznamů: 1